OREAS 22i
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Description
Description
OREAS 22i has been prepared from quartz sand to which 0.5% iron oxide has been added to produce a pale grey pulp. This colouring gives the material an appearance of primary origin (i.e. non-oxide). It is characterised by extremely low background gold of less than 1 ppb (parts per billion; 1 x 10-9) ≡ µg/kg.
|
Analyte
|
Certified Value
|
1SD
|
Expanded Uncertainty Low
|
Expanded Uncertainty High
|
Method
|
|---|---|---|---|---|---|
| Au, Gold (ppb) | < 1.0 | IND | IND | IND | Pb Fire Assay |
| Al, Aluminium (wt.%) | 0.095 | 0.007 | 0.088 | 0.102 | 4-Acid Digestion |
| Ba, Barium (ppm) | 4.94 | 1.05 | 3.44 | 6.44 | 4-Acid Digestion |
| Be, Beryllium (ppm) | 0.065 | 0.006 | 0.053 | 0.077 | 4-Acid Digestion |
| Ca, Calcium (wt.%) | 0.011 | 0.001 | 0.010 | 0.011 | 4-Acid Digestion |
| Cd, Cadmium (ppm) | < 0.020 | IND | IND | IND | 4-Acid Digestion |
| Ce, Cerium (ppm) | 1.89 | 0.142 | 1.69 | 2.10 | 4-Acid Digestion |
| Co, Cobalt (ppm) | 0.70 | 0.08 | 0.61 | 0.80 | 4-Acid Digestion |
| Cr, Chromium (ppm) | 8.64 | 1.86 | 6.24 | 11.04 | 4-Acid Digestion |
| Cs, Caesium (ppm) | 0.093 | 0.009 | 0.082 | 0.105 | 4-Acid Digestion |
| Cu, Copper (ppm) | 7.17 | 0.656 | 6.41 | 7.93 | 4-Acid Digestion |
| Fe, Iron (wt.%) | 0.386 | 0.021 | 0.364 | 0.409 | 4-Acid Digestion |
| Ga, Gallium (ppm) | 0.21 | 0.02 | 0.18 | 0.23 | 4-Acid Digestion |
| Hf, Hafnium (ppm) | 0.20 | 0.008 | 0.20 | 0.21 | 4-Acid Digestion |
| In, Indium (ppm) | < 0.005 | IND | IND | IND | 4-Acid Digestion |
| K, Potassium (wt.%) | < 0.010 | IND | IND | IND | 4-Acid Digestion |
| La, Lanthanum (ppm) | 0.92 | 0.071 | 0.77 | 1.07 | 4-Acid Digestion |
| Li, Lithium (ppm) | 16.3 | 0.84 | 15.6 | 17.1 | 4-Acid Digestion |
| Mg, Magnesium (wt.%) | < 0.010 | IND | IND | IND | 4-Acid Digestion |
| Mn, Manganese (wt.%) | 0.010 | 0.000 | 0.010 | 0.011 | 4-Acid Digestion |
| Mo, Molybdenum (ppm) | 0.65 | 0.07 | 0.54 | 0.75 | 4-Acid Digestion |
| Nb, Niobium (ppm) | 0.49 | 0.06 | 0.43 | 0.56 | 4-Acid Digestion |
| Ni, Nickel (ppm) | 4.35 | 0.306 | 4.05 | 4.65 | 4-Acid Digestion |
| P, Phosphorus (wt.%) | < 0.005 | IND | IND | IND | 4-Acid Digestion |
| Rb, Rubidium (ppm) | 0.35 | 0.05 | 0.28 | 0.43 | 4-Acid Digestion |
| Re, Rhenium (ppm) | < 0.002 | IND | IND | IND | 4-Acid Digestion |
| S, Sulphur (wt.%) | < 0.010 | IND | IND | IND | 4-Acid Digestion |
| Sb, Antimony (ppm) | 0.16 | 0.04 | 0.12 | 0.19 | 4-Acid Digestion |
| Sc, Scandium (ppm) | 0.15 | 0.05 | 0.04 | 0.25 | 4-Acid Digestion |
| Se, Selenium (ppm) | < 1.00 | IND | IND | IND | 4-Acid Digestion |
| Sn, Tin (ppm) | 0.45 | 0.10 | 0.37 | 0.53 | 4-Acid Digestion |
| Sr, Strontium (ppm) | 0.82 | 0.08 | 0.70 | 0.93 | 4-Acid Digestion |
| Ta, Tantalum (ppm) | < 0.10 | IND | IND | IND | 4-Acid Digestion |
| Te, Tellurium (ppm) | < 0.050 | IND | IND | IND | 4-Acid Digestion |
| Th, Thorium (ppm) | 0.64 | 0.041 | 0.53 | 0.75 | 4-Acid Digestion |
| Ti, Titanium (wt.%) | 0.020 | 0.000 | 0.019 | 0.021 | 4-Acid Digestion |
| Tl, Thallium (ppm) | < 0.020 | IND | IND | IND | 4-Acid Digestion |
| U, Uranium (ppm) | 0.11 | 0.02 | 0.10 | 0.13 | 4-Acid Digestion |
| V, Vanadium (ppm) | 2.00 | 0.21 | 1.59 | 2.41 | 4-Acid Digestion |
| W, Tungsten (ppm) | 0.100 | 0.000 | 0.100 | 0.100 | 4-Acid Digestion |
| Y, Yttrium (ppm) | 0.58 | 0.09 | 0.48 | 0.69 | 4-Acid Digestion |
| Zn, Zinc (ppm) | 6.28 | 0.74 | 5.47 | 7.09 | 4-Acid Digestion |
| Zr, Zirconium (ppm) | 6.77 | 0.457 | 6.08 | 7.45 | 4-Acid Digestion |
